<template>
  <div class="cart">
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">
        <ul class="cart-list" v-for="sku in good" :key="sku.id">
          <li class="cart-list-con1">
            <input type="checkbox" name="chk_list" :checked="sku.isChecked" @change="changeChecked(sku, $event)" />
          </li>
          <li class="cart-list-con2">
            <img :src="sku.imgUrl" />
            <div class="item-msg">{{ sku.skuName }}</div>
          </li>
          <li class="cart-list-con4">
            <span class="price">{{ sku.skuPrice }}.00</span>
          </li>
          <li class="cart-list-con5">
            <a @click="minusOne(sku)" class="mins">-</a>
            <input type="text" :value="sku.skuNum" minnum="1" class="itxt" @change="changeskuNum(sku, $event)" />
            <a @click="addOne(sku)" class="plus">+</a>
          </li>
          <li class="cart-list-con6">
            <span class="sum">{{ sku.skuNum * sku.skuPrice }}.00</span>
          </li>
          <li class="cart-list-con7">
            <a class="sindelet" @click="removeSku(sku)">删除</a>
            <br />
            <a href="#none">移到收藏</a>
          </li>
        </ul>
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input class="chooseAll" type="checkbox" :checked="totalLight.length == good.length" @change="allChange($event)" />
        <span>全选</span>
      </div>
      <div class="option">
        <a @click="allRemoveSku">删除选中的商品</a>
        <a>移到我的关注</a>
        <a>清除下柜商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">
          已选择 <span>{{ totalSelct }}</span
          >件商品
        </div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{ totalPrice }}</i>
        </div>
        <div class="sumbtn">
          <router-link class="sum-btn" to="/trade">结算</router-link>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { mapGetters } from "vuex";
import throttle from "lodash/throttle";
import debounce from "lodash/debounce";
export default {
  name: "ShopCart",
  mounted() {
    this.getData();
  },
  methods: {
    getData() {
      this.$store.dispatch("shopcart/getcartlist");
    },
    async addOne(sku) {
      try {
        await this.$store.dispatch("shopcart/addOneFun", { skuId: sku.skuId, skuNum: 1 });
        this.getData();
      } catch (error) {
        alert("出错了");
      }
    },
    minusOne: throttle(async function (sku) {
      try {
        if (sku.skuNum > 1) {
          await this.$store.dispatch("shopcart/minusOneFun", { skuId: sku.skuId, skuNum: -1 });
          this.getData();
        }
      } catch (error) {
        alert("出错了");
      }
    }, 900),
    changeskuNum: debounce(async function (sku, event) {
      let num = event.target.value * 1;
      let skuNum;
      if (isNaN(num) || num < 1) {
        skuNum = 0;
      } else {
        skuNum = parseInt(num) - sku.skuNum;
      }

      try {
        await this.$store.dispatch("shopcart/changeskuNumFun", { skuId: sku.skuId, skuNum });
        this.getData();
      } catch (error) {
        alert("出错了");
      }
    }, 1000),
    async removeSku(sku) {
      try {
        await this.$store.dispatch("shopcart/removeSkuFun", sku.skuId);
        this.getData();
      } catch (error) {
        alert("出错了");
      }
    },
    async changeChecked(sku, event) {
      try {
        let flag = event.target.checked ? 1 : 0;
        await this.$store.dispatch("shopcart/changeCheckedFun", { skuId: sku.skuId, isChecked: flag });
        this.getData();
      } catch (error) {
        alert("出错了");
      }
    },
    async allChange(event) {
      try {
        let isChecked = event.target.checked ? 1 : 0;
        await this.$store.dispatch("shopcart/allChangeFun", isChecked);
        this.getData();
      } catch (error) {
        alert("出错了");
      }
    },
    async allRemoveSku() {
      try {
        await this.$store.dispatch("shopcart/allRemoveSkuFun");
        this.getData();
      } catch (error) {
        alert("出错了");
      }
    },
  },
  computed: {
    ...mapGetters("shopcart", ["good"]),
    totalPrice() {
      return this.good.reduce((prev, next) => {
        return prev + next.skuNum * next.skuPrice;
      }, 0);
    },
    totalSelct() {
      return this.good.reduce((one, two) => {
        return one + two.skuNum;
      }, 0);
    },
    totalLight() {
      return this.good.filter((item) => {
        return item.isChecked == 1;
      });
    },
  },
};
</script>

<style lang="less" scoped>
.cart {
  width: 1200px;
  margin: 0 auto;

  h4 {
    margin: 9px 0;
    font-size: 14px;
    line-height: 21px;
  }

  .cart-main {
    .cart-th {
      background: #f5f5f5;
      border: 1px solid #ddd;
      padding: 10px;
      overflow: hidden;

      & > div {
        float: left;
      }

      .cart-th1 {
        width: 25%;

        input {
          vertical-align: middle;
        }

        span {
          vertical-align: middle;
        }
      }

      .cart-th2 {
        width: 25%;
      }

      .cart-th3,
      .cart-th4,
      .cart-th5,
      .cart-th6 {
        width: 12.5%;
      }
    }

    .cart-body {
      margin: 15px 0;
      border: 1px solid #ddd;

      .cart-list {
        padding: 10px;
        border-bottom: 1px solid #ddd;
        overflow: hidden;

        & > li {
          float: left;
        }

        .cart-list-con1 {
          width: 15%;
        }

        .cart-list-con2 {
          width: 35%;

          img {
            width: 82px;
            height: 82px;
            float: left;
          }

          .item-msg {
            float: left;
            width: 150px;
            margin: 0 10px;
            line-height: 18px;
          }
        }

        .cart-list-con3 {
          width: 20.8333%;

          .item-txt {
            text-align: center;
          }
        }

        .cart-list-con4 {
          width: 10%;
        }

        .cart-list-con5 {
          width: 17%;

          .mins {
            border: 1px solid #ddd;
            border-right: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }

          input {
            border: 1px solid #ddd;
            width: 40px;
            height: 33px;
            float: left;
            text-align: center;
            font-size: 14px;
          }

          .plus {
            border: 1px solid #ddd;
            border-left: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }
        }

        .cart-list-con6 {
          width: 10%;

          .sum {
            font-size: 16px;
          }
        }

        .cart-list-con7 {
          width: 13%;

          a {
            color: #666;
          }
        }
      }
    }
  }

  .cart-tool {
    overflow: hidden;
    border: 1px solid #ddd;

    .select-all {
      padding: 10px;
      overflow: hidden;
      float: left;

      span {
        vertical-align: middle;
      }

      input {
        vertical-align: middle;
      }
    }

    .option {
      padding: 10px;
      overflow: hidden;
      float: left;

      a {
        float: left;
        padding: 0 10px;
        color: #666;
      }
    }

    .money-box {
      float: right;

      .chosed {
        line-height: 26px;
        float: left;
        padding: 0 10px;
      }

      .sumprice {
        width: 200px;
        line-height: 22px;
        float: left;
        padding: 0 10px;

        .summoney {
          color: #c81623;
          font-size: 16px;
        }
      }

      .sumbtn {
        float: right;

        a {
          display: block;
          position: relative;
          width: 96px;
          height: 52px;
          line-height: 52px;
          color: #fff;
          text-align: center;
          font-size: 18px;
          font-family: "Microsoft YaHei";
          background: #e1251b;
          overflow: hidden;
        }
      }
    }
  }
}
</style>
